Fire-box for boilers.



U. C. SHAW.

FIRE BOX FOR BOILERS.

APPLICATION FILED APR.6, 1914.

Patented Feb. 9, 1915.

WITNESSES. I

FIC. v

CARL C. SHAW, OF PALESTINE, TEXAS.

FIRE-BOX FOR BOILERS.

Specification of Letters Patent.

Patented Feb. 9, 1915.

Application filed April 6, 1914. Serial No. 829,813.

To all about it may concern Be it known that I, CARL C. SHAW, a citizen of the United States, residing at Palestine. in the county of Anderson and State of Texas, have invented certain new and useful Improvements in FireBoxes for Boilers, of which the following is a specification.

This invention relates to new and useful improvements in a fire box for boilers.

The object of the invention is to provide a fire box of the character described which will retard the draft. causing a more complete mixture of the fuel and air and consequently a more thorough combustion of the fuel. This result is obtained by means of an arch-like partition which is erected across the fire box and which is formed of an improved type of brick, also constituting a feature of this invention, said partition, when formed, having a plurality of passageways through which the draft passes.

\Vith the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein- Figure 1 is a side view of a locomotive fire box embodying the improvement herein specified, partially in section. Fig. 2 is an end view thereof, taken on the sectional line a-a. Fig. 3 is a plan view, of one of the brick employed in the construction of the arch-like partition. Fig. 4 is a side elevation thereof, and Fig. 5 is a sectional View thereof.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to the fire box which is walled up on each side from end to end with the brick walls 2, whose inner sides diverge upwardly, as shown in Fig. 2. The fuel oil is fed into the front end of the fire box from a suitable tank, not shown, through the pipe 3, which terminates in the nozzle 4. There is a draft inlet 5 in the bottom of the fire box at the rear end thereof, through which air is admitted, which mingles with the fuel oil and renders the same combustible. At the present time a very low grade of oil is commonly used as a. fuel in boiler furnaces and a very high temperature is necessary in order to secure complete combustion.

The construction hcreinbefol'e described is common in fire boxes now in use, but with a low grade of oil the draft afforded by such construction is too strong and sufficient time is not given for the complete combustion of the fuel. Hence. the improved construction presently to be described.

The numeral (3 refers to a brick which, in side elevation, presents an arch-like appearance. will withstand great heat. Extending laterally from the upper edge of this brick are a plurality of projections 7 andv on the opposite side of the brick and extending laterally from the lower edgethereof are a plurality of projections 8, the projections 7 and 8 being arranged in staggered relation.

Spanning the fire box 1 is the partition 9, formed of brick of the character above described, the ends of said'brick resting upon the brick walls 2, 2, said brick being placed side by side, as shown in Fig. 1, and when so placed the outer ends of the projections 7, of any particular brick will rest against the body of the adjacent brick on one side and the outer ends of the projections 8 will rest against the body of the adjacent brick on the other side, thus holding the brick spaced apart, so as to provide a plurality of draft passageways between adjacent brick. Inasmuch as theprojections 7 and 8 are arranged in staggered relation, the said projections 7 partially block the passageways between the projections 8. as will be obvious from an inspection of Figs. 3 and 4. The fuel and air entering the fire box from opposite ends thereof and under,-

neath the partition 9 are mingled together underneath said partition where combustion takes place, and pass up through the partition 9, thereby heating the same to a very high degree. As hereinbefore explained the draft is retarded by said partition, giving more time for a complete consumption. of the fuel in the fire box before any of it enters the flues through which the consumed gases are conveyed to the Smokestack. In addition to the retarding influence of the partition 9, the brick of which said partition is formed attain a very high degree of heat, as before explained and the unconsumed fuel coming in contact therewith is further vaporized and then consumed.

This brick must be of material that I haveshown only one form of fire box and only (.116 form of brick of which the partition is to be formed, but it is to be understood that the particular design of brick used and the specific arrangement of the partition may beivaried to suit conditions and I hereby reserve the right to make such changes as may be found desirable so long as I do not depart from the scope of the appended claims. lVhat- I claim is 1- 1. In a device of thecharacter described, a

brick, arch-like in form, a plurality of projectirns extending laterally from the upper edge thereof on one side, and a plurality of projections extending laterally from the lower edge. thereof on the opposite side. said projectitns on one side being arranged in staggered relation to those on the opposite side.

2. In a fire box, a transverse partition formed of bricks arranged adjacent to each other, each brick plurality of projections extentinglaterally from the upper edge of each brick on one side and a plurality of projections extending laterally from the lower edge thereof on the opposite side, said projections on one side being arranged in staggered relation to those on the opposite side, the projections being arch-like in form, a.

of each brick of which said, partition is formed abutting against the corresponding brick on each side thereof.

In a device of the character described,

an arclnlike partition C(ZlllPOSCtl Uftl pluthose on the other side and forming passageways between the bricks. 4. A brick of the character described, formed of a body, a plurality of projections extending laterally from the upper edge thereof on one side anda plurality of projections extending laterally from the lower edge thereof on the op osite side. said projectirns on one side being arranged in staggered relation to these on the opposite side. i

In testimcny whereof I have signed my name to this specification in the presence of two subscribingwitnesses. p

CARL C. SHAW.

\Vitnesses:

i A. C.SPRIXGFIELn,

MAY l\1oxToonicnr; 

